BUFFERS, HYDROLYSIS OF SALTS 1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)₂ is composed of a Ca2+ cation and an unknown anion X, which undergoes hydrolysis. A. Write the balanced dissociation reaction of Ca(X)2 into its ions. Write your answer on your solution sheet B. Write the balanced hydrolysis reaction of the unknown anion, X. Write your answer on your solution sheet C. Calculate the K₁ or K₂ of X. D. Given the following Ką values of different weak acids, determine the identity of X. Weak acids Ka HIO 2.00 x 10-11 HCN 6.17 x 10-10 CH3COOH 1.80 x 10-5 HNO2 4.00 x 10-4

Chemistry: An Atoms First Approach
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Chapter14: Acid- Base Equilibria
Section: Chapter Questions
Problem 68E: A student dissolves 0.0100 mole of an unknown weak base in 100.0 mL water and titrates the solution...
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BUFFERS, HYDROLYSIS OF SALTS
1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+ cation and an unknown anion X, which
undergoes hydrolysis.
A. Write the balanced dissociation reaction of Ca(X)2 into its ions. Write your answer on your solution sheet
B. Write the balanced hydrolysis reaction of the unknown anion, X. Write your answer on your solution sheet
C. Calculate the K₁ or Kb of X.
D. Given the following Ką values of different weak acids, determine the identity of X.
Weak acids
Ka
HIO
2.00 x 10-11
HCN
6.17 x 10-10
CH3COOH
1.80 x 10-5
HNO₂
4.00 x 10-4
ts
Transcribed Image Text:BUFFERS, HYDROLYSIS OF SALTS 1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+ cation and an unknown anion X, which undergoes hydrolysis. A. Write the balanced dissociation reaction of Ca(X)2 into its ions. Write your answer on your solution sheet B. Write the balanced hydrolysis reaction of the unknown anion, X. Write your answer on your solution sheet C. Calculate the K₁ or Kb of X. D. Given the following Ką values of different weak acids, determine the identity of X. Weak acids Ka HIO 2.00 x 10-11 HCN 6.17 x 10-10 CH3COOH 1.80 x 10-5 HNO₂ 4.00 x 10-4 ts
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